Sealing-closure with removable gasket.



H. E. TOWNSEND.

" Patented Oct. 9,19n.

ATTORNEYS STA'L D 1 3 1 S IfnilENT OFFICE.

HABQRY E. TOWNSEI TD, OF BROOKLYN, NEW YORK, ASSIGNOB TO THE ANCHOR CAP&

GLOSIIBE cdnronanox, 0F BROOKLYN, NEW YORK, A CORPORATION OF NEW YORK.

SEALING-CLOSURE WITH REMOVABLE GASKET.

Specification of Letters Patent.

Patented Oct. 9, 1917.

Application filed January 10, 1917. Serf ".1 No. 141,551.

To all whom it may concern:

Be it known that I, HARRY E. Townsnnn, a citizen of the United States,and a resident of the city of Brooklyn, in the county of Kings, State ofNew York, have invented certain new and useful Improvements inSealing-Closures with Removable Gaskets, of which the following isaspecification.

This invention relates to scaling closures adapted to be applied toglass containers and the like and has particular reference to the typeoi closure disclosed, in my prior Patent No. 1,159,624, and in myapplication for Patent Serial No. 141,552, filed the 10th day of January1917, and constitutes a further development in the art of this type ofclosures and upon which this invention is an improvement.

The princlpal object of this invention is to provide a closure whereinthe lacquer skin is not destroyed by the sealing operation; wherein theseal is effected with a minimum amount of power; wherein still furthervariation in sizes of containers-is admitted thereby reducing breakage;and

also wherein provision is made enabling the seal to be easily andquicklybroken whereby the closure may be easily removed.

Other and further objects of the present invention will in part beobvious and will in part be pointed out hereinafter in the specificationfollowing by reference to the accompanying drawings wherein like partsare represented by like characters throughout the several views thereof.

Figure 1 illustrates a glass container sealed in accordance with thisinvention.

Fig. 2 is a detail view illustrating a crosssection through a 'prpl-tionof the sealing dies and the sealing clos 're prior to the sealingoperation.

Fig. 3 is a view similar to Fig. 2 with the exception that the sealingoperation is completed.

Fig. 4 shows the manner in which the gasket may be removed after theedge has been'llattenedor pounded as illustrated in Fi 5. %ig. 5 is aview showing. the distortion of the edge due to flattening of the beadby pounding or otherwise.

The closure is adapted to be seated on a glass container 1 which may beprovided with a cylindrical sealing wall 2 adjacent thewlnmlfi t tion.

hereof, and said closure prior H to being sealed comprises a top portion4 which, carries an annular bead having an upper wall 5, a side wall 6,and a slightly inturned edge 7. The annular bead pref-- erablyisdisposed below the top 4 as by means of an annular rim 8 in order to enable the seal to be effected slighrly below the 11 per edge of the glasscontainer since the e ges of the container in most cases in clude moreirregulariLilw-s lhan the Thereof. The annular bead carries a gaslmt 9comprising an annular rin; oi snii'ablo plastic material. The dies forforming the finished closure comprise an anvil (lie 10 which is providedwith an inclined surface 11 and a vertical surface 12 which may besubstantially parallel to the side wall of the container. The chuck orupper die 14 may be provided with a vertical supporting" Wall 15 and aninclined face 16 which may be substantially parallel to the inclinedsurface ll on the anvil member. The immediately foregoing descriptivemutter refers to the construction prior to the sealing operation.

The closure after being sealed comprises substantially an annular skirt17 which forms the major support for the compressed gasket 9 and theexcess metal which is dis torted during the sealing operation is formedintoa double walled inclined ring or shelf 18 which incloses but a verysin-ill amount of the gasket. 'lhc upper portion of the asket issupportul by the annular groove owned as at 19. It will be noted thatthis type of closure provides a relatively large amount of compressedgasket of substantially uniform cross-section, so that a larger ran fromstandard sizes is allowed so l ar as t e glass structure is concerned.Fur thermore, in this type of device a larger amount of the gasket ispermitted to flow from between the forming dies so that the side wallfinal pressures are more nearly radial pressures, consequently requiringless power to close the sealing chucks, thereby utilizing less power inperforming the sealing opera- Sinoethe deformation of the metal duringsealing operation is substantially slilght, with the exception of thefold which to es place at. the corner between the sun faces 5 and 6 toform the double walled ring 18, it will b" evident that the lacquer onthe surfaces .111 not be destro d.

Heretofore in the art of closures of this cover where the contents ofthe package are not entirely used up at once; and where a.

secure seal is effected against the side wall, the mechanical retainingpower of the seal is so great that it is diflicult to force the headover the edge of the glass container even after the vacuum within thecontainer has been destroyed. Because of the type of seal formed by the.construction herein previously described, a portion of the gasket may besubstantially released by bending up, by pounding or otherwise, aportion of the annular ring 18, as shown in Figs. 4 and 5. In order totake advantage of this fact an opening 20 is provided in the annularskirt 1'? which enables the gasket to be forced downwardly as by meansof the thumb, or suitable tool, (Fig. 4) to comprise the loop "21. Afterthe loop 21 is formed the entire gasket may be stretched and removedfrom between the annular skirt 17 and the side wall. of the container 1.The for-min loop 21 breaks the vacuum, where t is closure is used insealing packages under vacu' um, so that when the gasket is removed thecover may be easily and without effort lifted from the top of theunsealed container.

Having thus described my invention what I claim is l. A closure providedwith an annular beading, a gasket having a portion thereof displacedlaterall under compression against the side wal of the container, thebending having an annular ring comprising a portion of the metal foldedupon itself with the sides thereof substantially parallel, and a skirtdepending from said anhular ring and supporting the major portion of thesaid asket.

2. A cosure provided with an annular bending and a gasket displacedlaterally under compression forces and against the side wall 'of thecontainer, said beading having its upper wall in the form of a concave lgroove with the lower wall substantially parallel thereto and a skirtdepending from said lower wall portion of the gasket.

of the I and supporting the major 3. A closure comprising a top portion,11 depending side well. an annular ring formed in said side wall andcomprising a portion of metal folded upon itself, a dependin skirt belowsaid annular ring, a gasket held under compression between the side wallof the container and the said skirt.

4. A closure comprising a cover portion, a side wall including a skirt,a gasket adapted to beheld under compression between the container andsaid skirt, and an annular ring formed from the excess metal displacedduring the sealing operation, said annular ring being substantiallydevoid of portions of the gasket.

5. A closure com irising a cover portion adapted to fit over the mouthof a container, a gasket, a skirt adapted to support said gasket undercompression against the side wall of the container, an angular ringadjacent said skirt portion and formed of the excess metal rom thesealing operation, said ring being substantially devoid of gasketmaterial.

6. A closure comprising a cover member adapted to fit over the mouth ofa suitable container, theside wall of said cover comprising a skirt, agasket adapted to be maintained under pressure between said skirt andthe side wall of the container, and an annular ringedjacent said skirtand being formed entirely from excess metal resulting from the sealingoperation.

7. A closure comprising a cover member adapted to fit over the mouth ofa suitable container and having a depending side wall a suitable gasketunder pressure against the.

side wall of the container, said skirt being provided with a recess inthe lower edge thereof, an annular rin abovesaid skirt and inclinedthereto, said annular ring being formed of excess metal developed duringthe sealing operation,-the parts being constructed and arranged to enalethe gasket to be removed when the annular ring is bent inwardlyadjacent-the specified reoess.

HARRY n. TOWNSEND.

